1390380733 has 6 divisors (see below), whose sum is σ = 1617381726. Its totient is φ = 1191754872.

The previous prime is 1390380697. The next prime is 1390380737. The reversal of 1390380733 is 3370830931.

It can be written as a sum of positive squares in only one way, i.e., 760270329 + 630110404 = 27573^2 + 25102^2 .

It is not a de Polignac number, because 1390380733 - 2²⁵ = 1356826301 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1390380692 and 1390380701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390380737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14187510 + ... + 14187607.

It is an arithmetic number, because the mean of its divisors is an integer number (269563621).

Almost surely, 2^1390380733 is an apocalyptic number.

It is an amenable number.

1390380733 is a deficient number, since it is larger than the sum of its proper divisors (227000993).

1390380733 is an equidigital number, since it uses as much as digits as its factorization.

1390380733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28375131 (or 28375124 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 1390380733 is about 37287.8094422292. The cubic root of 1390380733 is about 1116.1209163680.

The spelling of 1390380733 in words is "one billion, three hundred ninety million, three hundred eighty thousand, seven hundred thirty-three".